The number of unique daily visits you can get to your site every month.

A “unique daily visit” means a session from one person in a given day - so multiple visits/pageviews by the same person in one day counts as one visit. The monthly limits of 25k, 100k, and 1M map to the sum of your unique daily visits in a given month.

So, for example, if you have 100 people visiting your site every day for a month (even if they’re clicking through every page on your site hundreds of times ) it would only count 100 visits per day, times 30 days = 3,000 monthly visits.